Malware Analysis Report

2025-05-28 17:38

Sample ID 221220-mkad9ahc63
Target bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40
SHA256 bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40
Tags
smokeloader systembc backdoor trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40

Threat Level: Known bad

The file bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40 was found to be: Known bad.

Malicious Activity Summary

smokeloader systembc backdoor trojan

SmokeLoader

SystemBC

Detects Smokeloader packer

Executes dropped EXE

Downloads MZ/PE file

Drops file in Windows directory

Program crash

Suspicious use of UnmapMainImage

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious behavior: GetForegroundWindowSpam

Checks SCSI registry key(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-12-20 10:30

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-20 10:30

Reported

2022-12-20 10:33

Platform

win10v2004-20221111-en

Max time kernel

150s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe"

Signatures

Detects Smokeloader packer

Description Indicator Process Target
N/A N/A N/A N/A

SmokeLoader

trojan backdoor smokeloader

SystemBC

trojan systembc

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4527.exe N/A
N/A N/A C:\ProgramData\helbkxl\bsjptaw.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\bsjptaw.job C:\Users\Admin\AppData\Local\Temp\4527.exe N/A
File opened for modification C:\Windows\Tasks\bsjptaw.job C:\Users\Admin\AppData\Local\Temp\4527.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\4527.exe

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe N/A
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Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A N/A N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A N/A N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2532 wrote to memory of 2224 N/A N/A C:\Users\Admin\AppData\Local\Temp\4527.exe
PID 2532 wrote to memory of 2224 N/A N/A C:\Users\Admin\AppData\Local\Temp\4527.exe
PID 2532 wrote to memory of 2224 N/A N/A C:\Users\Admin\AppData\Local\Temp\4527.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe

"C:\Users\Admin\AppData\Local\Temp\bbce2762d2cf06a4cbeae8b8eca305986c8ede78877bca908d80d522ac874f40.exe"

C:\Users\Admin\AppData\Local\Temp\4527.exe

C:\Users\Admin\AppData\Local\Temp\4527.exe

C:\ProgramData\helbkxl\bsjptaw.exe

C:\ProgramData\helbkxl\bsjptaw.exe start

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2224 -ip 2224

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2224 -s 492

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 dowe.at udp
N/A 91.195.240.101:80 dowe.at tcp
N/A 8.8.8.8:53 xisac.com udp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 45.141.58.129:80 tcp
N/A 104.80.225.205:443 tcp
N/A 40.79.189.58:443 tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 8.8.8.8:53 bitleague.live udp
N/A 198.38.91.55:443 bitleague.live tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 178.31.8.68:80 xisac.com tcp
N/A 109.205.214.18:443 tcp

Files

memory/4072-133-0x00000000005F0000-0x00000000005F9000-memory.dmp

memory/4072-132-0x0000000000669000-0x0000000000679000-memory.dmp

memory/4072-134-0x0000000000400000-0x000000000045F000-memory.dmp

memory/4072-135-0x0000000000400000-0x000000000045F000-memory.dmp

memory/2224-136-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\4527.exe

MD5 cdc67700f25eaed1417264c4bdec03d3
SHA1 56639e9414e6ee8394d940d62778475ddf071290
SHA256 fdd4cca0516be799c954e96be26b2d04e42ea0bac1edb00604412914bae2f100
SHA512 a2b38a1d4d0cb57532f3feb2efa1fb345c03df9114dfb2dcc93286e19b96eb5e182bd79d070a0e4fccf1980f47effc9b511dbb0074bba69bee80098317e08038

C:\Users\Admin\AppData\Local\Temp\4527.exe

MD5 cdc67700f25eaed1417264c4bdec03d3
SHA1 56639e9414e6ee8394d940d62778475ddf071290
SHA256 fdd4cca0516be799c954e96be26b2d04e42ea0bac1edb00604412914bae2f100
SHA512 a2b38a1d4d0cb57532f3feb2efa1fb345c03df9114dfb2dcc93286e19b96eb5e182bd79d070a0e4fccf1980f47effc9b511dbb0074bba69bee80098317e08038

memory/2224-139-0x0000000000649000-0x000000000065A000-memory.dmp

memory/2224-140-0x00000000005B0000-0x00000000005B9000-memory.dmp

memory/2224-141-0x0000000000400000-0x000000000045F000-memory.dmp

C:\ProgramData\helbkxl\bsjptaw.exe

MD5 cdc67700f25eaed1417264c4bdec03d3
SHA1 56639e9414e6ee8394d940d62778475ddf071290
SHA256 fdd4cca0516be799c954e96be26b2d04e42ea0bac1edb00604412914bae2f100
SHA512 a2b38a1d4d0cb57532f3feb2efa1fb345c03df9114dfb2dcc93286e19b96eb5e182bd79d070a0e4fccf1980f47effc9b511dbb0074bba69bee80098317e08038

C:\ProgramData\helbkxl\bsjptaw.exe

MD5 cdc67700f25eaed1417264c4bdec03d3
SHA1 56639e9414e6ee8394d940d62778475ddf071290
SHA256 fdd4cca0516be799c954e96be26b2d04e42ea0bac1edb00604412914bae2f100
SHA512 a2b38a1d4d0cb57532f3feb2efa1fb345c03df9114dfb2dcc93286e19b96eb5e182bd79d070a0e4fccf1980f47effc9b511dbb0074bba69bee80098317e08038

memory/3448-144-0x0000000000503000-0x0000000000513000-memory.dmp

memory/3448-145-0x0000000000400000-0x000000000045F000-memory.dmp

memory/2224-146-0x0000000000649000-0x000000000065A000-memory.dmp

memory/2224-147-0x0000000000400000-0x000000000045F000-memory.dmp